designate/api-ref/source/samples/zones/create-zone-request.json

{
    "attributes": {
        "tier": "gold", "ha": "true"
    },
    "name": "example.org.",
    "email": "joe@example.org",
    "type": "PRIMARY",
    "ttl": 7200,
    "description": "This is an example zone."
}